@misc{indiciae87c818a01625,
  title = {Geologic map of the Malvado quadrangle, Terrell and Val Verde Counties, Texas},
  author = {J.A. Sharps},
  year = {1963},
  doi = {10.3133/i382},
  url = {https://pubs.usgs.gov/publication/i382},
  note = {Source identifier: i382}
}